1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sergejj [24]
2 years ago
6

If the following system of equations was written as a matrix equation in the form AX = C,? and matrix A was expressed in the for

m, a=[a c] [b d] find the value of a - b + c + d. 5x+7y=7 3x-2y=9​
Mathematics
1 answer:
Tomtit [17]2 years ago
3 0

The value of the expression a - b + c + d will be 7.

<h3>What is the matrix?</h3>

A matrix is a specific arrangement of items, particularly numbers. A matrix is a row-and-column mathematical structure. The a_{ij} element in a matrix, such as M, refers to the i-th row and j-th column element.

The system of equations are given below.

5x + 7y = 7

3x - 2y = 9​

Then the equations can be written in the form of matrix. Then we have

\begin{bmatrix}5 & 7 \\3 & -2 \\\end{bmatrix} \begin{bmatrix}x \\y \\\end{bmatrix} = \begin{bmatrix}7 \\9 \\\end{bmatrix}

Then the value of a, b, c, and d will be

a = 5, b = 3, c = 7, and d = -2

Then  the value of the expression will be

a - b + c + d = 5 - 3 + 7 - 2

a - b + c + d = 12 - 5

a - b + c + d = 7

More about the matrix link is given below.

brainly.com/question/9967572

#SPJ1

You might be interested in
Simplify 4^-4.<br> please help I have 10 minutes
kolezko [41]

Answer:

1/256

Step-by-step explanation:

4^{-4}

(1/4)^{4}

=> 1/256

7 0
3 years ago
A one-stop flight from seattle to nyc can stop at boise, omaha, or chicago. the flight then connects to either la guardia or jfk
Sindrei [870]
The first and only stop of the flight can be Boise, Omaha or Chicago. This means there are 3 possibilities where to stop. From thee the flight connects to New York City, either to La Guardia or to JFK Airport.
1 possible route: Seattle-Boise-La Guardia
<span>2 possible route: Seattle-Omaha-La Guardia
</span><span>3 possible route: Seattle-Chicago-La Guardia
</span><span>4 possible route: Seattle-Boise-NYC
</span><span>5 possible route: Seattle-Omaha-NYC
</span><span>6 possible route: Seattle-Chicago-NYC
</span>
Or in other words: There are two airports where the flight can arrive and for each of them there are three possible routes. So, in total there are 2*3=6 possible routes.
3 0
3 years ago
Graph the line using a point and a slope. Write the equation of each line.
SpyIntel [72]

Answer:

y=1.2x-3

Step-by-step explanation:

I had this as an rsm problem a few weeks ago and forgot how to solve it lol hope this helps

6 0
3 years ago
Wesley has 480 stamps in his collection. He puts these stamps into display cases. Each display
disa [49]

Answer:

Wesley needs 32 displays for his stamp collection

Step-by-step explanation:

480 stamps in total.

15 stamps in each case

480/ 15= 32

6 0
3 years ago
5(x+4)= -2(-4-x)+3 <br> what is the answer?
lianna [129]

Answer:

x = -3

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

5(x + 4) = -2(-4 - x) + 3

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Distribute:                                   5x + 20 = 8 + 2x + 3
  2. Combine like terms:                   5x + 20 = 2x + 11
  3. Subtract 2x on both sides:        3x + 20 = 11
  4. Subtract 20 on both sides:        3x = -9
  5. Divide 3 on both sides:              x = -3

<u>Step 3: Check</u>

<em>Plug in x to verify it's a solution.</em>

  1. Substitute:                    5(-3 + 4) = -2(-4 - -3) + 3
  2. Simplify:                        5(-3 + 4) = -2(-4 + 3) + 3
  3. Add:                              5(1) = -2(-1) + 3
  4. Multiply:                        5 = 2 + 3
  5. Add:                              5 = 5

Here we see that 5 does indeed equal 5. ∴ x = -3 is a solution of the equation.

And we have our final answer!

5 0
3 years ago
Read 2 more answers
Other questions:
  • trying to find the measure of the numbered angle? can someone please help me with these!:) thank you!!!!
    7·2 answers
  • How many cups does it take to make a gallon of water
    11·1 answer
  • Determine the value of x2 for 14 degrees of freedom and an area of .10 in the left tail of the
    9·1 answer
  • All the digits are odd. The last two digits add to make ten. The first and last digits add to make eight. The first two digits a
    15·1 answer
  • A rectanglular swimming pool is twice as long as it is wide. A small concrete walk was surrounds the pool. The walk way is a con
    8·1 answer
  • Convert the following to Slope-Intercept Form: 4x – 3y = 24.
    5·2 answers
  • It is 4:12 p.m. Emma's mom will be home from work in 70 minutes, and Emma has gymnastics lessons at 6:00 p.m.
    8·1 answer
  • ILL GIVE BRAINLIST PLS:/which of the following statements about xy and xx is true ?
    10·2 answers
  • What is the 158th term of the sequence 8,6,4..?
    5·1 answer
  • The parabola opens:<br> O left<br> O up<br> O down<br> O right
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!